Initial Alpine Version

1 files changed, 73 insertions, 0 deletions

diff --git a/imap/src/ansilib/strtoul.c b/imap/src/ansilib/strtoul.c
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+/* ========================================================================
+ * Copyright 1988-2006 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 
+ * ========================================================================
+ */
+
+/*
+ * Program:	String to unsigned long
+ *
+ * Author:	Mark Crispin
+ *		Networks and Distributed Computing
+ *		Computing & Communications
+ *		University of Washington
+ *		Administration Building, AG-44
+ *		Seattle, WA  98195
+ *
+ * Date:	14 February 1995
+ * Last Edited:	30 August 2006
+ */
+
+/*
+ * Turn a string unsigned long into the real thing
+ * Accepts: source string
+ *	    pointer to place to return end pointer
+ *	    base
+ * Returns: parsed unsigned long integer, end pointer is updated
+ */
+
+unsigned long strtoul (char *t,char **endp,int base)
+{
+  unsigned long value = 0;	/* the accumulated value */
+  int negative = 0;		/* this a negative number? */
+  unsigned char c,*s = t;
+  if (base && (base < 2 || base > 36)) {
+    errno = EINVAL;		/* insist upon valid base */
+    return value;
+  }
+  while (isspace (*s)) s++;	/* skip leading whitespace */
+  switch (*s) {			/* check for leading sign char */
+  case '-':
+    negative = 1;		/* yes, negative #.  fall into '+' */
+  case '+':
+    s++;			/* skip the sign character */
+  }
+  if (!base) {			/* base not specified? */
+    if (*s != '0') base = 10;	/* must be decimal if doesn't start with 0 */
+				/* starts with 0x? */
+    else if (tolower (*++s) == 'x') {
+      base = 16;		/* yes, is hex */
+      s++;			/* skip the x */
+    }
+    else base = 8;		/* ...or octal */
+  }
+  do {				/* convert to numeric form if digit */
+    if (isdigit (*s)) c = *s - '0';
+				/* alphabetic conversion */
+    else if (isalpha (*s)) c = *s - (isupper (*s) ? 'A' : 'a') + 10;
+    else break;			/* else no way it's valid */
+    if (c >= base) break;	/* digit out of range for base? */
+    value = value * base + c;	/* accumulate the digit */
+  } while (*++s);		/* loop until non-numeric character */
+  if (tolower (*s) == 'l') s++;	/* ignore 'l' or 'L' marker */
+  if (endp) *endp = s;		/* save users endp to after number */
+				/* negate number if needed */
+  return negative ? -value : value;
+}